Sand trap



F. CELLNER May 22, 1928'.

SAND TRAP Filed Sept. 13, 1.927

v Inventor Fr k Ce/lner' A ltomey Patented May 22, 1928.

with 1 FRANK CELLNER, or mga lwasfimmn.

Application 'nied se' tember 13,1927. Serial Ital-"219,197. p I

My present invention relates to improvements in sand traps for railwaylocomotives of the type employing air under pressure for forcing thesand, which flows by gravity from the dome to the trap, to the front ofthe driving wheels as well as to the rear of the wheels for use inforward and rear movements of the locomotive or engine.

The sand traps are equipped with means whereby the air pressure may beap lied to the interior of the trap for clearing t e sand chamber andmeans are providedby means of which access may be had to the interior ofthe trap for repairs, cleaning, etc. A cutoli is provided between thedome and the interior of the trap whereby the entrance of sand to thetrap may be prevented when desired.

The invention consists in certain novel combinations and arrangements ofparts as will hereinafter be more fully set forth and claimed. In theaccompanying drawings I have illustrated one complete example of 'thephysical embodiment of my invention wherein the parts are combined andarranged according to the best mode I havethus far devised for thepractical application of the principles of my invention.

Figure 1 is a side view of so-much of a railway locomotive as isnecessary to illustrate the installation of my invention.

Figure 2 is a sectional view at line 2-2 and Figure 3 is a sectionalview at line 3-3 of Figure 1. Figure 4 is a perspective view of thecut-off, detached.-

Figure 5 is a top plan view showing the installation. Figure 6 is afront view of one of the two sand traps. Figure 7 is a sectional detailview at line 7-7 of Figure 6.

In order that the general arrangement and relation of parts may readilybe understood I have shown in Figure 1 a standard type of boiler as 1with the usual sand dome 2, and the sand traps 3 and 4 are located atopposite sides of the boiler below the dome 2.

Air under pressure is provided from the usual auxiliary air reservoir 5,and the air pipe 6 is equipped with a pair of control valves 7 and 9,the former to control flow of sand for the drivers 8 when the locomotiveis backing and the other to control How of sand to the drivers 10 whenthe locomotive is advancing.

To feed the sand to the rear, an air pipe 11 from the valve 7 extendsthe two sand I traps and is provided with a blast nozzle 11 and to feedthe sand forward, an air pipe 12 extends from the valve 9 to the twotraps and is provided with a blast nozzle 12' within the traps. Forsanding the tracks as the engine is backing the sand pipes 13 projectrearwardly from the traps, and for sanding the tracks in front, of thewheels 10 when the locomotive is advancing the pipes 14 project from therespective traps.

The traps are provided with outlet ports the nozzles Willcause a flow ofsand through its sand pipe, and thus to the track or rails.

If repairs or replacements are necessary, or it is desired toclean theinterior chamber 18 of the trap, the flow of sand may be cut off fromthe dome to the trap by means of a cut-off device located in the top ofthe trap, just beneath the intake port 17 for the sand from the dome.

This cut-off device and the side plate or cover 19 are readilyaccessible, and the former may be conveniently secured in the trap whenthe latter has been temporarily removed. The cut-off device comprises ahorizontally disposed flat plate 20 having an attaching flange 21 andsecured in-the top part of the chamber 18 of the trap. On top of theflat plate is arranged a flat, slide gate 22 which has a guide flangemovable in the guide slot 23 of the flat plate, and the gate is adaptedto open or close the sand port 24 in the flatplate. The port 24 isnormally open, but should occasion arise when it is necessary to cut oilthe flow of sand from the dome to the trap, the gate is movedbyhandpower applied to the handle- 25.

Should the sand become wet or clogged and refuse to flow freely the cutoff may be closed, the side plate 19 removed to'give access to theinterior of the trap, and the latter may be cleared, after which thecover plate is replaced and the slide gate opened.

The two globe valves 7 and 9 are of course manipulated by the engineerof the locomotive in his cab in usual manner for sandno a ing purposes,and of course the pressure of air to the sand pipes may be controlled bymanipulation of the valves.

Having thus fully described my invention, What I claim as new and desireto secure by Letters Patent is a The combination with a sand trap havingan inlet sand port to receive sand from a dome, and a normally closed,removable side cover for the trap, of a detachable plate 10 guided insaid slot and adapted to close-the 15 portfand an exterior handle onsaid gate.

In testimony whereof I afiix my signature.

FRANK CELLNER.

